This is a common "generic" firmware bug. If your image is upside down or mirrored, go to (or "Flip") and cycle through the options until it returns to normal. "My Projector Won't Turn On"
If your YG300 is working fine, do not update it. Many users report that the stock firmware works better than later “bug fix” versions. Only update if you have a specific problem. yg300 projector software update
Has anyone successfully found a custom ROM or a 2024/2025 update file for the YG300? Drop the link below if it’s verified safe. This is a common "generic" firmware bug
If your YG300 software is laggy or doesn't support Netflix/YouTube, don't risk bricking it with a firmware flash. Instead, plug a into the HDMI port. This bypasses the projector's internal software entirely, giving you a modern, fast, and bug-free interface without any risk. Many users report that the stock firmware works